2008-12-04_PERMIT FILE - C1994082 ‎(10)‎

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 12/4/2008
• Doc Name: Pond 012 and Pond 012A Two-Pond System Design ‎(Pgs 13-12.1-149 to 13-12.1-225)‎
• Section_Exhibit Name: Tab 13 Attachment 13-12 Appendix 13-12.1 Part 2
• Media Type: D
• Archive: No

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Yoast Mine
Pond 0121012A System
HYDROLOGIC 1~19'UT PARAMETERS
SEDCAD 4
Channel YPM-1-3
Watershed ID -Structure 5 -
3edimentology: k factor AREP
SOILS MAP UNITlSOILS
SERIES
HYDROLOGIC SOIL GROUP
k FACTOR acres
(
B 0.32 10.50
Reclaimed
C
0.24 0.6
46CID - Splitro loam 6
0
B 0.23 .
53C/DlEIF - Winevada loam 11.6
k Factor 0.31
Soils series information from Yoast Mine Permit Application Pac!<age (see Tab 9, Soil Baseline Study
[Nyenhuis, 1994]). Hydrologic Soil Group values are approved Yoast values (see Attachment 13-12, Table 13-
12.2). The soil erodibility factor, "k-Factor", values are presented in Attachment 13-12, Table 13-12.2.
SEDCAD 4
Channel YPM-1-3
Watershed ID -Structure 5 - SWS1
C7
•
TR-37
3edimentology: Control Factor
LAND USE CONDITION COVER TYPE
Undistrubed Aspen/Mtn. Brush
Reclaimed Reclaimed
CONTROL Atttf
VEGETATION FACTOR (acres
25% canopy, SO% 0.042 3.23
ground cover
60% ground cover 0.042 6.28
9.5
The Control Factor values are approved Yoast Mine values as presented in Attachment 13-12, Table 13-12.3.
The values were originally presented in Renard, et al. (1997) Predicting Soi! Erosion by Water. A Guide to
Converation Planning with the Revised Universal Soi! Loss Equation (RUBLE), Agricultural Handbook 703,
U.S. Department of Agriculture as reported in Warner et al. (1998) as reported in Warner et al. (1998).
13-12.1-180
Revised 08!08
Weiohted C Factor 0.042 ]